#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>

int main(int argc, char *argv[])
{
    if(argc != 2)
    {
        printf("Usage: %s <dir> <fis>\n",argv[0]);
        exit(EXIT_FAILURE);
    }

    DIR *directory;

    if((directory=opendir(argv[1])) < 0)
    {
        printf("Eroare la deschiderea directorului sau parametrul dat nu e un director\n");
        exit(EXIT_FAILURE);
    }

    int f;

    if((f=open(argv[2],O_WRONLY)) < 0)
    {
        printf("Eroare la deschiderea fisierului pentru scriere sau parametrul dat nu e un fisier\n");
        exit(EXIT_FAILURE);
    }

    struct dirent *dir_info;
    struct stat file;
    char buff[512];

    while((dir_info=readdir(directory)) != NULL)
    {
        int rez;
        if ((rez = stat(dir_info->d_name, &file)) > 0)
        {
            if (S_ISREG(file.st_mode) && file.st_blocks > 2)
            {
                snprintf(buff, sizeof(buff), "File %s has %d blocks\n", dir_info->d_name, (int)file.st_blocks);

                printf("%s", buff);
                write(f, buff, strlen(buff));
            }
        }
    }

    closedir(directory);
    close(f);
    return 0;
}